BOP clade

BOP clade
	annual meadowgrass; (Poa annua)
Scientific classification
Kingdom:	Plantae
(unranked):	Angiosperms
(unranked):	Monocots
(unranked):	Commelinids
Order:	Poales
Family:	Poaceae
(unranked):	BOP clade
subfamilies
	Bambusoideae; Oryzoideae; Pooideae;

The BOP clade (sometimes BEP clade) is one of two major lineages (or clades) of undefined taxonomic rank in the grasses (Poaceae), containing more than 5,400 species, about half of all grasses. Its sister group is the PACMAD clade; contrary to many species of that group who have evolved C₄ photosynthesis, the BOP grasses all use the C₃ photosynthetic pathway.^[1]

The clade contains three subfamilies from whose initials its name derives:^[2] the bamboos (Bambusoideae); Oryzoideae (syn. Ehrhartoideae), including rice; and Pooideae, mainly distributed in temperate regions, with the largest diversity and important cereal crops such as wheat and barley. Oryzoideae is the earliest-diverging lineage, sister to the bamboos and Pooideae:^[1]^[3]

Poaceae

BOP clade

	Bamboos (Bambusoideae)

	Pooideae

References

^ ^a ^b Grass Phylogeny Working Group II (2012). "New grass phylogeny resolves deep evolutionary relationships and discovers C₄ origins". New Phytologist. 193 (2): 304–312. doi:10.1111/j.1469-8137.2011.03972.x. ISSN 0028-646X. PMID 22115274.
^ Soreng, Robert J.; Peterson, Paul M.; Romschenko, Konstantin; Davidse, Gerrit; Zuloaga, Fernando O.; Judziewicz, Emmet J.; Filgueiras, Tarciso S.; Davis, Jerrold I.; Morrone, Osvaldo (2015). "A worldwide phylogenetic classification of the Poaceae (Gramineae)". Journal of Systematics and Evolution. 53 (2): 117–137. doi:10.1111/jse.12150. ISSN 1674-4918.
^ Janke, Axel; Zhao, Lei; Zhang, Ning; Ma, Peng-Fei; Liu, Qi; Li, De-Zhu; Guo, Zhen-Hua (2013). "Phylogenomic Analyses of Nuclear Genes Reveal the Evolutionary Relationships within the BEP Clade and the Evidence of Positive Selection in Poaceae". PLoS ONE. 8 (5): e64642. doi:10.1371/journal.pone.0064642. ISSN 1932-6203.{{cite journal}}: CS1 maint: unflagged free DOI (link)

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[GWPGII-1] Grass Phylogeny Working Group II (2012). "New grass phylogeny resolves deep evolutionary relationships and discovers C₄ origins". New Phytologist. 193 (2): 304–312. doi:10.1111/j.1469-8137.2011.03972.x. ISSN 0028-646X. PMID 22115274.

[SorengPeterson2015-2] Soreng, Robert J.; Peterson, Paul M.; Romschenko, Konstantin; Davidse, Gerrit; Zuloaga, Fernando O.; Judziewicz, Emmet J.; Filgueiras, Tarciso S.; Davis, Jerrold I.; Morrone, Osvaldo (2015). "A worldwide phylogenetic classification of the Poaceae (Gramineae)". Journal of Systematics and Evolution. 53 (2): 117–137. doi:10.1111/jse.12150. ISSN 1674-4918.

[JankeZhao2013-3] Janke, Axel; Zhao, Lei; Zhang, Ning; Ma, Peng-Fei; Liu, Qi; Li, De-Zhu; Guo, Zhen-Hua (2013). "Phylogenomic Analyses of Nuclear Genes Reveal the Evolutionary Relationships within the BEP Clade and the Evidence of Positive Selection in Poaceae". PLoS ONE. 8 (5): e64642. doi:10.1371/journal.pone.0064642. ISSN 1932-6203.{{cite journal}}: CS1 maint: unflagged free DOI (link)

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